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Dealing with sediment transport over partly non-erodible bottoms
Rulot, François; Dewals, Benjamin; Archambeau, Pierre et al.
2012In Tullis, Blake; Chanson, Hubert (Eds.) Proc. 4th International Junior Researcher and Engineer Workshop on Hydraulic Strucutres, IJREWHS’12
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Keywords :
Sediment transport; Morphodynamic modelling; Numerical modelling
Abstract :
[en] In depth-averaged flow and morphodynamic models using a finite volume discretization based on explicit time integration, a specific difficulty can arise during a computation: the computed sediment level can become lower than the level of a non-erodible bottom. The original developments presented in this paper enable to correct the non-physical sediment levels. The method, based on iterative limitation of the outward fluxes, is perfectly mass conservative and remains computationally efficient. The resulting model has been validated with several 1D benchmarks leading to configurations with sediment transport over non-erodible bottom. Two interesting experimental benchmarks are highlighted in this paper to show the efficiency of numerical simulations. In these benchmarks, the computation time has been verified not to increase by more than 15% when using the new method.
Research center :
Aquapôle - ULiège
Disciplines :
Civil engineering
Author, co-author :
Rulot, François 
Dewals, Benjamin  ;  Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Archambeau, Pierre  ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Pirotton, Michel ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Erpicum, Sébastien  ;  Université de Liège - ULiège > Scientifiques attachés au Doyen (Sc.appliquées)
Language :
English
Title :
Dealing with sediment transport over partly non-erodible bottoms
Publication date :
2012
Event name :
4th International Junior Researcher and Engineer Workshop on Hydraulic Strucutres, IJREWHS’12
Event organizer :
Utah State University
Event place :
Logan, United States
Event date :
17-20 June 2012
Audience :
International
Main work title :
Proc. 4th International Junior Researcher and Engineer Workshop on Hydraulic Strucutres, IJREWHS’12
Editor :
Tullis, Blake
Chanson, Hubert
Peer reviewed :
Peer reviewed
Available on ORBi :
since 28 February 2014

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